BS EN 60255-151:2009 PDF

What is BS EN 60255-151 - Functional requirements for over/under current protection about?

BS EN 60255-151 is a British standard as a part of the IEC 60255 series that specifies minimum requirements for over/under current relays. BS EN 60255-151 includes a specification of the protection function, measurement characteristics, and time delay characteristics. BS EN 60255-151 defines the influencing factors that affect the accuracy under steady-state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in BS EN 60255-15...